XC6367B332ML datasheet, PDF - EEWORLD Datasheet

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XC6367B332ML: DescriptionPWM Controlled, PWM/PFM Switchable Step-Up DC/DC Controllers; File Size427KB，28 Pages; ManufacturerTOREX; Websitehttp://www.torex.co.jp/chinese/

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XC6367B332ML Overview

PWM Controlled, PWM/PFM Switchable Step-Up DC/DC Controllers

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04S_02XC6367/68 02.09.12 14:41 ページ 407

Series

PWM Controlled, PWM/PFM Switchable Step‐Up DC/DC Controllers

NInput

Voltage Range : 0.9~10.0V

NOutput

Voltage Range : 1.5~6.5V(±2.5%)

NOscillator

Frequency : 300kHz(±15%)

NPWM/PFM

Switching Control (XC6368)

NHigh

Efficiency

NSOT-25

Package

: 84% (typ.)

■Applications

GElectronic

Information Organizers

GPalmtops

GCellular

and portable phones

GPortable

Audio Systems

GVarious

Multi-function Power Supplies

■Features

Input voltage range

: 0.9V~10V

Operating voltage range

: 2.0V~10V

Output voltage range

: 1.5V~6.5V programmable in 0.1V

steps (±2.5%)

Oscillator frequency

: 300, 100kHz (±15%)

Custom products for 180, 500kHz

Output Current

: 200mA + (V

=1.8V, V

OUT

=3.3V)

High Efficiency

: 84% (typ.)

Stand-by capability

: I

STB

=0.5A (max.)

Selection

: Soft start set-up external

Output Voltage set-up internal (V

OUT

)

Output Voltage set-up external (FB)

Package

: SOT-25

■General Description

The XC6367/68 series are multi-functional step-up DC/DC converter

controllers with built-in high speed, low ON resistance drivers.

Large output currents are possible using an externally connected

transistor, coil, diode and condenser.

Output voltage is selectable in 0.1 steps within a 1.5V ~ 6.5V range

(±2.5%). For output voltages outside this range, we recommend this FB

version, which has a 1.0V internal reference voltage. Using this version,

the required output voltage can be set-up using 2 external resistors.

With a 300kHz switching frequency, the size of the external components

can be reduced.

Control switches from PWM to PFM during light loads with the XC6368

(PWM/PFM switchable) and the series is highly efficient from light loads

to large output currents.

Soft start time of XC6367/68A, B, and C series is internally set to

10msec and XC6367/68C, D, and F series regulate soft start time by

connecting resistors and capacitors exteranally.

During stand-by time (CE pin "Low"), current consumption is reduced to

less than 0.5µA.

■Typical Application Circuit

OUT

■Typical Performance

Characteristic

XC6368A333MR (300kHz,3.3V)

L=22μH(CR54), C

=94μF(Tantalum)

SD:MA737, Tr:XP161A1355P

EXT

GND

100

（Tantalum）

2.7V

OUT

Efficiency:EFFI (%)

0.1

100

1000

=0.9V 1.2V

1.5V 1.8V

Output Current:I

OUT

(mA)

407

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